Sharpening pencils and crayons!
The littles asked to do some writing practice, but the pencils they wanted to use were dull.
We got out the sharpener, and then all thoughts of writing were gone. They spent at least 45 minutes sharpening pencils, and then crayons. They'd take turns between the 2 sharpeners, and sometimes one would peel crayon wrappers off so that there was always a pile ready to go.
We can always write another day.